1

See medical provider:
If it hurts to bear weight after a direct fall onto your knee you should be evaluated by a medical provider to make sure no fractures, tendon or ligament injuries occurred.
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The knee joint is the joint between three bone of the lower leg: the proximal tibia, the distal femur, and the patella. There are multiple causes of knee pain including degenerative, inflammatory, and traumatic causes.
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3

PFS:
Patellofemoral syndrome, usually more common in young females. Sometimes also common in runners. Treatment focused on quad strengthening exercises which leads to your knee cap tracking better as it should on the groove in your knee as you bend and straighten your knee. See your doctor, you will likely benefit from some physical therapy, and nsaids.
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4

Several things:
This is a problem that necessitates a face-to-face meeting with your doctor. This will allow him/her to examine you, ask specific questions. And possibly order tests to find out what's wrong and what to do to help you.
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5

Hard to say:
There are many moving parts in the knee. If you have a lot of swelling, it may mean you tore the meniscus, the padding between the tibia and femur, or you might have torn a ligament. But it could also be a minor contusion (bruising). You will not know unless you see an orthopedic doctor who will do an exam and may or may not order an MRI which is the best way of seeing looking inside the knee.
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Knee bruise:
Could be just contusion, so ice, rest elevate try crutches, motrin /alelve ( if not allergic). if still having pain in 2-3 days with difficulty walking get xray ( or if you want get it sooner-today ) just to rule out patellafracture. without xray we can not tell if it is fractured. F/u with doc/urgent care.
Bruises take about a week to start feeling better, fractures need treatment
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10

Common:
When the discoid meniscus is debrided to make a semilunar shape, the contour of the edges tend to be irregular. This makes the popping sound more likely. The body should recontour this edge over time, and the noise will lessen or subside. General rule is "noise" is no big deal, but "painful noise" may be a problem. If you experience pain, see surgeon who did the work-- might need steroid shot.
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Cartilage damage?:
you could have an internal derangement that is causing your clicking and pain. If you haven't had it checked out yet, see an orthopedic specialist. He will need to know when the clicking occurs and what things make your knee feel worse. You may need x-rays and possibly an MRI.
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12

See an Orthopedist -:
To be examined and x-rayed to diagnose that you haven't gotten a fx, as outer bone in the elbow (radial head) can very easily get a fx, causing the symptoms you have. Other bones can also be fxed.
Other causes could be a sprain of the ligaments, or contusion. Any elbow injury can result in loss of motion with pain.
So seeing an orthopedist will be helpful.
Good luck.
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15

Possible...?:
You need to collect and record when you had bunion surgery, how soon you began right knee hurting, etc. Then, bring those information to see your surgeon. But of no doubt, pain signals something chemically or mechanically irritating local or regional nerve-endings or nerve fibers. But is it related with bunion surgery? Or just coincided? Known to us, diabetic neuropathy is relatively common. So, ..
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17

Acute trauma:
To the knee with common symptoms: focal tenderness, effusion, inability to bear weight. Most soft tissue injuries, including internal derangements of the knee, although potentially disabling, do not usually need emergency treatment.
Rec. See your pcp for evaluation, imaging (ct/mri) and treatment.
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18

Maybe:
Falling hard on your knee may have caused filamentous damage or patella damage. Did the fall break the skin? If that occurred did you clean the area well to avoid infection. You need to see your physician at the first opportunity.
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